6.1
2004
3.2
1998
6.6
2011
8.0
1999
9.7
1987
5.7
2000
2.7
9.5
1967
5.8
2001
3.4
6.5
2010
1982
6.9
1997
6.2
2009
6.0
2018
4.7
4.0
2020
2.0
2015
talk Series ON
